docs: def on_ok(self):
          """ Perform restoration on the backup file selected """
          if self.dir_select.value:
              npyscreen.notify_wait('In the process of restoring',
                                    title='Restoring...')
              status = self.restore(self.dirs[self.dir_select.value[0]])
              if status[0]:
                  npyscreen.notify_confirm('Status of restore:\n' +
                                           status[1])
              else:
                  npyscreen.notify_confirm(status[1])
              self.quit()
          else:
              npyscreen.notify_confirm('Choose a version to restore from')